view/malonnote/mnTextCtrl.cpp

#include "mnTextCtrl.h"

BEGIN_EVENT_TABLE(mnTextCtrl, wxTextCtrl)
        EVT_KEY_DOWN(mnTextCtrl::handleKeyDown)
END_EVENT_TABLE()

void mnTextCtrl::handleKeyDown(wxKeyEvent& event)
{
        long pos, x, y, oldY;
        bool isLineUp   = FALSE;
        bool isLineDown = FALSE;

        if(event.ControlDown()) {
                pos = GetInsertionPoint();
                PositionToXY(pos, &x, &y);
                
                switch(event.GetKeyCode()){
                        case 'N':  // Next line
                                oldY = y;
                                y++;
                                isLineDown = TRUE;
                                break;

                        case 'P':  // Previous line
                                oldY = y;
                                y--;
                                isLineUp = TRUE;
                                break;

                        case 'F':  // Forward
                                x++;
                                break;

                        case 'B':  // Backward
                                x--;
                                break;

                        case 'E':  // End of line
                                x = GetLineLength(y);
                                break;

                        case 'A':  // Begin of line
                                x = 0;
                                break;

                        case 'H':  // Backspace
                                Remove(pos-1, pos);
                                x--;
                                break;

                        case 'D':  // Delete
                                Remove(pos, pos+1);
                                break;

                        default:
                                event.Skip();
                                return;
                }

                pos = XYToPosition(x, y);
                if(isLineUp){
                        PositionToXY(pos, &x, &y);
                        if(y != oldY - 1){
                                pos = XYToPosition(GetLineLength(oldY-1), oldY-1);
                        }
                }
                else if(isLineDown) {
                        PositionToXY(pos, &x, &y);
                        if(y != oldY + 1) {
                                pos = XYToPosition(GetLineLength(oldY+1), oldY+1);
                        }
                }
                SetInsertionPoint(pos);
                return;
        }
        event.Skip();
}